A note: Pages that use only one of the affected templates won't show this bug.

In T320364#8785061, @TheresNoTime wrote:

(with thanks to @Femkemilene for the pointer)

Today replicated with https://en.wikipedia.org/wiki/Effects_of_climate_change:

• Using legacy Vector, the highlighting works as expected
• Using Vector 2022, the highlighting does not work (and some <noinclude> tags appear at the start of the article)

Thanks for the feedback. I've updated the sandbox template to (1) remove the reference class for mobile links, and (2) prefix the anchor link with "CITEREF" for the desktop popup. I will ping other editors on Wikipedia and see if this works consistently.